Combustion and reaction

Application of Response Surface Methodology for Analysis of Reheat Steam Temperatures in a Double Reheat Coal-Fired Boiler 

  • ZHANG Jian ,
  • XU Wei ,
  • ZHANG Zhongxiao ,
  • FAN Haojie ,
  • WU Xiaojiang ,
  • DONG Jiancong
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  • 1. Institute of Thermal Energy Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China

Online published: 2023-12-04

Supported by

Financial support for this work by the National Key Research and Development Program of China (Grant No.2017YFB0602102) is gratefully acknowledged.

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

Abstract

For the improvement of reheat steam quality and performance of double reheat coal-fired utility boiler under wide load operation, a variety of temperature regulation ways were utilized to adjust the energy distribution between different heating surfaces. In this paper, thermodynamic calculation based on the fundamental heat transfer theory was conducted for the analysis of temperature regulation strategy effects to steam temperature. In consideration of the specific overlapping heating surface arrangement, the compartment model was adopted to solve this problem. Response surface methodology (RSM) was used to analysis the effect of each temperature regulating variables on the steam temperature and boiler efficiency; then the polynomial model was fitted to predict the primary and secondary steam temperature simultaneously. Results showed that the flue gas recirculation rate has a relatively significant influence on the steam temperature, the maximum temperature deviation between fitting value and calculation value is 3.85°C in 75%THA; the quadratic model can well predict the steam temperature under different operation conditions in wide load change. The variation of flue gas baffle has a significant influence on the boiler efficiency, compared to the flue gas recirculation and angle of burner oscillation. The influence of various factors on the reheat steam temperature is flue gas baffle > flue gas recirculation > angle of burner oscillation.

Cite this article

ZHANG Jian , XU Wei , ZHANG Zhongxiao , FAN Haojie , WU Xiaojiang , DONG Jiancong . Application of Response Surface Methodology for Analysis of Reheat Steam Temperatures in a Double Reheat Coal-Fired Boiler [J]. Journal of Thermal Science, 2022 , 31(6) : 2203 -2215 . DOI: 10.1007/s11630-022-1464-5

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